Hi gcrain,
Welcome home … I’m glad to see you made it through Afghanistan safely 
Some of the better options in the Richmond area I’m aware of are listed in post #5 here.
Since most consumers wouldn’t know the difference between types of latex even if they could open up the mattress … you are dependent on accuracy of the information you receive and the knowledge and integrity of the the retailer or manufacturer you are dealing with.
In addition to the Richmond list … you can see the Pure Latex Bliss dealers near you on their retail store finder here. PLB is owned by one of the two manufacturers of Talalay latex in the western world (Latex International).
Phoenix